Home / 13,129,394.40-19,714,366.80-7,157,426.40

Finding the Fourth Proportional to 13,129,394.40, 19,714,366.80 and 7,157,426.40

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Solution

The fourth proportional to 13,129,394.40, 19,714,366.80 and 7,157,426.40 is: 10,747,192.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,129,394.40 : 19,714,366.80 = 7,157,426.40 : x
  2. Step 2: Convert to fraction form
    13,129,394.40/19,714,366.80 = 7,157,426.40/x
  3. Step 3: Cross multiply
    13,129,394.40x = 19,714,366.80 × 7,157,426.40
  4. Step 4: Simplify right side
    13,129,394.40x = 141,104,129,393,603.53
  5. Step 5: Solve for x
    x = 141,104,129,393,603.53/13,129,394.40
  6. Step 6: Final answer
    x = 10,747,192.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.